Omron CS1W-CLK12-V1, Operation Manual

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What Are Data Links? Section 5-1
Application Example of Using Offsets
In the following example, the send data from node 1 is split into three parts
and each part is received by a different node, i.e., each of the other nodes
receives only part of the send data from node 1. This enables effective use of
data link memory areas without wasting space. In this way, a type of message
service (i.e., specific data to a specific node) can be achieved through data
links.
5-1-1 Data Link Specifications
Note 1. In systems that combine Optical Bus Controller Link Units/Boards (model
numbers ending with CLK11) with other Units/Boards, the max. number of
nodes and words are as follows:
Even when the CX-Programmer’s CX-Net is being used as the Program-
ming Device, the maximum number of data link nodes is 32 nodes (node
addresses 1 to 32). The maximum number of data link words/node is
32,000 words when the maximum number of nodes is 32 nodes.
2. If Controller Link Units are used in duplex operation, the maximum number
of active nodes is equal to the following:
62
−
Number of standby Units
# 1 # 2 # 3 # 4
Send data of node 1
Item Description
Number of
data link
nodes 62 max., 2 min. (See note 1 and 2.)
Number of
data link
words Number of send/receive words per node (total of Area 1 and Area 2):
CS: 12,000 max.
CVM1/CV: 8,000 max.
IBM or compatible: Manual setting: 62,000 max. (See note 1.)
(See note 3.) Automatic setting: 8,000 max.
Number of send words per node
(total of Area 1 and Area 2): 1,000 max.
Allocation of
data link
areas Manual
setting Area 1, 2: Bit area (IR, CIO, and LR Areas)
Data Memory (DM and EM Areas)
However, Area 1 and Area 2 cannot be set in the same
memory area.
Automatic
setting Area 1: IR, CIO, or LR Area
Area 2: Data Memory (DM and EM Areas)
Method Specification
Manual Optical Bus Units/Boards:
Up to 32 nodes (with node addresses 1 to 32) can be data linked
and the max. number of data link words is 32,000 words/node.
Optical Ring Units/Boards:
Up to 62 nodes (with node addresses 1 to 62) can be data linked
and the max. number of data link words is 62,000 words/node.
Automatic All Units/Boards:
Up to 32 nodes (with node addresses 1 to 32) can be data linked
and the max. number of data link words is 32,000 words/node.